نتایج جستجو برای: wimp
تعداد نتایج: 1118 فیلتر نتایج به سال:
The Cryogenic Dark Matter Search (CDMS) employs Ge and Si detectors to search for WIMPs via their elastic-scattering interactions with nuclei while discriminating against interactions of background particles. CDMS I data, from the Stanford Underground Facility shallow site, give limits on the spin-independent WIMPnucleon elastic-scattering cross-section that exclude unexplored parameter space a...
We show that in the late-infall model of our galactic halo by P. Sikivie the expected phase of the annual modulation of a WIMP halo signal in direct detection experiments is opposite to the one usually expected. If a non-virialized halo component due to the infall of (collisionless) dark matter particles cannot be rejected, an annual modulation in a dark matter signal should be looked for by ex...
We evaluate background rejection capabilities and physics performance of a detector composed of two diverse elements: a sensitive target (filled with one or two species of liquefied noble gases) and an active veto (made of Gddoped ultra-pure water). A GEANT4 simulation shows that for a direct WIMP search, this device can reduce the neutron background to O(1) event per year per tonne of material...
Screenshots, known for years as capturing Graphical User Interface by means of print screen button or capturing software, is not only beneficial for creating user guide or user manual document, but also for reverse engineering process. This paper presents a new way of capturing the data appear on a screen by creating the ontology of its interface. Data capturing based on the interaction style o...
We have considered neutralino to be the lightest supersymmetric particle (LSP) in the framework of minimal Anomaly Mediated Supersymmetric (mAMSB) model. We have studied variation of neutralino mass with the supersymmetric parameters. Considering these neutralinos to be the candidates for weakly interacting massive particle (WIMP) or cold dark matter (CDM), we have calculated the neutralino nuc...
We analyze the indirect astrophysical signatures of secluded models of WIMP dark matter, characterized by a weak-scale rate for annihilation into light MeV-scale mediators which are metastable to decay into Standard Model states. Such scenarios allow a significant enhancement of the annihilation cross section in the galactic halo relative to its value at freeze-out, particularly when the mediat...
A prototype weakly interacting massive particle (WIMP) detector system is described. The detection efficiency is much larger when the incident neutral particle flux is perpendicular to the detector plane than when it is parallel to the plane. A greatly scaled-up system based on this device would therefore be sensitive to the diurnal rotation of the “WIMP wind” produced by the solar system’s rap...
We consider multi-component dark matter in a model where one component is feebly interacting (FIMP) while the second weakly (WIMP). The contains an inert scalar doublet and complex singlet features discrete $Z_4$ symmetry. determine parameter space that satisfies theoretical constraints, collider relic density as well direct indirect detection limits. discuss possibility to probe through astrop...
A bstract Real scalar triplet dark matter, which is known to be an attractive candidate for a thermal WIMP, comprehensively studied paying particular attention the Sommerfeld effect on matter annihilation caused by weak interaction and other between Higgs boson. We find parameter region that includes so-called ‘WIMP-Miracle’ one still surviving, i.e. it respects all constraints imposed searches...
As user interfaces evolve from traditional WIMP to ‘reality based interfaces’, developers are faced with a set of new challenges which are not addressed by current software tools and models. This paper discusses these challenges and presents a software model and specification language which are designed to simplify the development of non-WIMP interfaces such as virtual environments. Finally, we...
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